Eco-Friendly Rapid-Setting Concrete Incorporating Waste-Derived Additives for Post-Disaster Reconstruction
災害復旧のための廃棄物由来添加剤を用いた環境に優しい急硬性コンクリート (AI 翻訳)
Anna Starczyk-Kołbyk, W. Łasica, Emil Kardaszuk, Michał Gregorczyk
🤖 gxceed AI 要約
日本語
本研究では、災害復旧向けの環境配慮型急硬性コンクリートを開発。CEM Vセメントと廃ガラス・ケイ酸塩系添加剤を組み合わせ、5vol%ガラス骨材を含むM1配合で28日圧縮強度95.1MPa、初期凝結時間213分を達成。廃棄物リサイクルと低炭素化を両立する。
English
This study developed an eco-friendly rapid-setting concrete using CEM V cement and waste glass/silicate additives for post-disaster reconstruction. The M1 mixture with 5 vol.% glass aggregate achieved 28-day compressive strength of 95.1 MPa and initial setting time of 213 min, demonstrating a sustainable material for emergency repairs.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本は自然災害が多く、迅速な復旧と低炭素化が求められる。本材料は廃ガラスと低排出セメントを用い、日本のGX政策や循環経済に適合。防災インフラでの応用が期待される。
In the global GX context
Globally, concrete production accounts for ~8% of CO2 emissions. This paper proposes a low-emission, rapid-setting concrete that also valorizes waste glass, contributing to sustainable construction and circular economy goals under international frameworks such as the Paris Agreement.
👥 読者別の含意
🔬研究者:Provides empirical data on combination of CEM V cement, waste glass, and silicate additives for rapid-setting, high-strength concrete, useful for sustainable material development.
🏢実務担当者:Construction firms can adopt this concrete for rapid repair projects, reducing downtime and environmental footprint through waste recycling and lower cement content.
🏛政策担当者:Supports policies incentivizing recycling of construction waste and adoption of low-carbon concrete in public infrastructure projects.
📄 Abstract（原文）
This study investigates an eco-friendly rapid-setting concrete developed for emergency repair and accelerated post-disaster reconstruction. The proposed material concept combines a low-emission multicomponent cement, CEM V/A (S-V) 42.5 N-LH/HSR/NA, with a hybrid aggregate skeleton composed of crushed granite and waste soda–lime glass, as well as a waste-derived silicate additive system based on aqueous sodium silicate, glass dust and glass powder. One reference mixture (R) and five modified mixtures (M1–M5) were designed to assess the effects of partial replacement of natural aggregate by glass aggregate and of the dosage of the silicate-based additive system on concrete performance. The experimental programme included setting time, compressive strength, splitting tensile strength, water absorption, freeze–thaw resistance and microstructural observations. Among the modified concretes, the mixture containing 5 vol.% glass aggregate (M1) showed the most favourable mechanical performance after 28 days, reaching a compressive strength of 95.1 ± 2.4 MPa and a splitting tensile strength of 4.82 ± 0.29 MPa, compared with 45.5 ± 0.8 MPa and 2.18 ± 0.11 MPa, respectively, for the reference concrete. Higher glass contents reduced strength relative to M1, but the modified mixtures still maintained satisfactory performance. The silicate-based system significantly affected setting behaviour; in mixture M5, the initial and final setting times were reduced from 380 ± 5 min and 497 ± 5 min to 213 ± 5 min and 307 ± 5 min, respectively. The results show that the combined use of CEM V cement, waste glass and silicate-based waste-derived additives can produce concretes with rapid-setting, high strength and satisfactory durability-related properties. The developed material may therefore be considered a promising solution for selected rapid-repair and reconstruction applications, particularly in lightly reinforced or unreinforced concrete elements requiring fast restoration of functionality.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.3390/ma19061218first seen 2026-06-29 07:46:01
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